The Meccano Mountain Rally 25 model set comes with 345 parts, one 3-volt motor and two tools. The components enable youngsters aged 9 and up to create their own motorized all-terrain climber or 25 other motorized vehicles. The array of Mountain Rally projects includes an ATV, a helicopter, and a pickup truck. However, the design and style of their creations are limited only by imagination. Once constructed, drivers can race their vehicles across rugged terrain.